server: return OK when there is no stmt #22738
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jackysp
reviewed
Feb 5, 2021
Done |
|
LGTM |
|
Note: I've changed the test to add a timeout component. There is no test for master for this case, so I will prepare another PR shortly. |
ti-srebot
approved these changes
Feb 5, 2021
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/merge |
ti-srebot
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/run-all-tests |
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What problem does this PR solve?
Issue Number: Fixes #22646
Problem Summary:
There was a regression introduced in the 4.0 branch by a cherry-pick. The issue does not exist in the master branch, or any public released binaries yet. It was caught before 4.0.11 was released. It does not exist in 4.0.10.
I am unsure if connectors rely on this functionality. There is a
COM_PINGprotocol feature, but it's possible that an incorrectly implemented driver uses an empty query instead. In which case it could be quite a serious issue.What is changed and how it works?
Proposal: xxx
What's Changed:
How it Works:
Related changes
pingcap/docs/pingcap/docs-cn:Check List
Tests
Side effects
Release note